1004023112021 has 2 divisors, whose sum is σ = 1004023112022. Its totient is φ = 1004023112020.

The previous prime is 1004023111957. The next prime is 1004023112047. The reversal of 1004023112021 is 1202113204001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 661967740996 + 342055371025 = 813614^2 + 584855^2 .

It is a cyclic number.

It is not a de Polignac number, because 1004023112021 - 2⁶ = 1004023111957 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1004023112621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 502011556010 + 502011556011.

It is an arithmetic number, because the mean of its divisors is an integer number (502011556011).

Almost surely, 2^{1004023112021} is an apocalyptic number.

It is an amenable number.

1004023112021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1004023112021 is an equidigital number, since it uses as much as digits as its factorization.

1004023112021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 1004023112021 its reverse (1202113204001), we get a palindrome (2206136316022).

The spelling of 1004023112021 in words is "one trillion, four billion, twenty-three million, one hundred twelve thousand, twenty-one".